diff --git a/include/linux/blk-mq.h b/include/linux/blk-mq.h
index f454244..4d28005 100644
--- a/include/linux/blk-mq.h
+++ b/include/linux/blk-mq.h
@@ -8,7 +8,7 @@
 struct blk_mq_cpu_notifier {
 	struct list_head list;
 	void *data;
-	void (*notify)(void *data, unsigned long action, unsigned int cpu);
+	int (*notify)(void *data, unsigned long action, unsigned int cpu);
 };
 
 struct blk_mq_ctxmap {